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GB2470332A - Liquid crystal display uniformity - Google Patents

Liquid crystal display uniformity Download PDF

Info

Publication number
GB2470332A
GB2470332A GB1015192A GB201015192A GB2470332A GB 2470332 A GB2470332 A GB 2470332A GB 1015192 A GB1015192 A GB 1015192A GB 201015192 A GB201015192 A GB 201015192A GB 2470332 A GB2470332 A GB 2470332A
Authority
GB
United Kingdom
Prior art keywords
display device
liquid crystal
luminance
crystal display
test points
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1015192A
Other versions
GB201015192D0 (en
GB2470332B (en
Inventor
Leonard Tsai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Development Co LP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Development Co LP filed Critical Hewlett Packard Development Co LP
Publication of GB201015192D0 publication Critical patent/GB201015192D0/en
Publication of GB2470332A publication Critical patent/GB2470332A/en
Application granted granted Critical
Publication of GB2470332B publication Critical patent/GB2470332B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0693—Calibration of display systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

In one embodiment, a system to manage luminance levels on a display device comprises a display device comprising a liquid crystal module comprising a matrix of pixels, a backlight assembly, and a plurality of drivers to drive the backlight assembly. The system fiirther comprises a processing device coupled to the display device and comprising logic to establish a set of luminance values from a plurality of test points on the display device, determine a minimum luminance value from the set of luminance values, determine, for at least a selected one of the test points, a variance from the minimum luminance value, and use the variance to regulate a luminance level of the selected one of the test points.
GB1015192.6A 2008-03-05 2008-03-05 Liquid crystal display uniformity Expired - Fee Related GB2470332B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2008/055920 WO2009110896A1 (en) 2008-03-05 2008-03-05 Liquid crystal display uniformity

Publications (3)

Publication Number Publication Date
GB201015192D0 GB201015192D0 (en) 2010-10-27
GB2470332A true GB2470332A (en) 2010-11-17
GB2470332B GB2470332B (en) 2012-06-13

Family

ID=41056292

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1015192.6A Expired - Fee Related GB2470332B (en) 2008-03-05 2008-03-05 Liquid crystal display uniformity

Country Status (6)

Country Link
US (1) US20110012943A1 (en)
CN (1) CN101965551B (en)
DE (1) DE112008003758T5 (en)
GB (1) GB2470332B (en)
TW (1) TW200949820A (en)
WO (1) WO2009110896A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI408968B (en) * 2009-12-29 2013-09-11 Innolux Corp Method of improving motion blur of display and display thereof
CN103091886B (en) * 2013-02-01 2015-08-05 北京京东方光电科技有限公司 Liquid crystal indicator and liquid crystal panel thereof
CN103500566B (en) * 2013-09-29 2016-10-05 京东方科技集团股份有限公司 Display device, display brightness inequality improve device and ameliorative way
CN103943080B (en) * 2014-03-06 2016-08-17 京东方科技集团股份有限公司 A kind of display device pixel intensity compensating control method and device
KR102637702B1 (en) * 2016-08-30 2024-02-15 엘지디스플레이 주식회사 Liquid crystal display device and method of local dimming of the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010038374A1 (en) * 2000-04-19 2001-11-08 Koninklijke Philips Electronics N.V. Matrix display device with improved image sharpness
US20020102017A1 (en) * 2000-11-22 2002-08-01 Kim Sang-Kyun Method and apparatus for sectioning image into plurality of regions
US20030005591A1 (en) * 2001-05-29 2003-01-09 Newman Roger L. Gable lead method & device
US6921172B2 (en) * 2003-07-02 2005-07-26 Hewlett-Packard Development Company, L.P. System and method for increasing projector amplitude resolution and correcting luminance non-uniformity

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1153585A (en) * 1995-05-09 1997-07-02 菲利浦电子有限公司 Improvements to brightness uniformity across displays
JP2994630B2 (en) * 1997-12-10 1999-12-27 松下電器産業株式会社 Display device capable of adjusting the number of subfields by brightness
US6366270B1 (en) * 1998-05-29 2002-04-02 Silicon Graphics, Inc. Multiple light source color balancing system within a liquid crystal flat panel display
US6611249B1 (en) * 1998-07-22 2003-08-26 Silicon Graphics, Inc. System and method for providing a wide aspect ratio flat panel display monitor independent white-balance adjustment and gamma correction capabilities
US6816145B1 (en) * 1998-07-22 2004-11-09 Silicon Graphics, Inc. Large area wide aspect ratio flat panel monitor having high resolution for high information content display
US6161041A (en) * 1998-10-26 2000-12-12 Vitatron Medical B. V. Pacemaker system with diurnal pattern controlled overdrive for prevention of tachycardia
US6129444A (en) * 1998-12-10 2000-10-10 L-3 Communications Corporation Display backlight with white balance compensation
CN1377495A (en) * 1999-10-04 2002-10-30 松下电器产业株式会社 Method for driving display panel, and display panel luminance correction device and display panel driving device
US6442522B1 (en) * 1999-10-12 2002-08-27 International Business Machines Corporation Bi-directional natural language system for interfacing with multiple back-end applications
TW554625B (en) * 2000-12-08 2003-09-21 Silicon Graphics Inc Compact flat panel color calibration system
US6801220B2 (en) * 2001-01-26 2004-10-05 International Business Machines Corporation Method and apparatus for adjusting subpixel intensity values based upon luminance characteristics of the subpixels for improved viewing angle characteristics of liquid crystal displays
KR100899021B1 (en) * 2001-09-14 2009-05-27 아메리칸 패널 코포레이션 Visual display testing, optimization and harmonization methods and systems
WO2003073159A1 (en) * 2002-02-20 2003-09-04 Planar Systems, Inc. Light sensitive display
US7609360B2 (en) * 2002-06-17 2009-10-27 Fujifilm Corporation Image display device
CN101557670B (en) * 2003-02-06 2011-12-07 塔西软件开发有限及两合公司 Digital control system for LCD backlights
KR101016288B1 (en) * 2004-06-29 2011-02-22 엘지디스플레이 주식회사 LCD and its driving method
KR100638723B1 (en) * 2005-02-04 2006-10-30 삼성전기주식회사 LED array driving device and backlight driving device using the same
JP2006286906A (en) * 2005-03-31 2006-10-19 Sony Corp Light emitting diode device, backlight device using the same, and liquid crystal display device
JP4369953B2 (en) * 2006-12-06 2009-11-25 株式会社 日立ディスプレイズ Image correction method and image display apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010038374A1 (en) * 2000-04-19 2001-11-08 Koninklijke Philips Electronics N.V. Matrix display device with improved image sharpness
US20020102017A1 (en) * 2000-11-22 2002-08-01 Kim Sang-Kyun Method and apparatus for sectioning image into plurality of regions
US20030005591A1 (en) * 2001-05-29 2003-01-09 Newman Roger L. Gable lead method & device
US6921172B2 (en) * 2003-07-02 2005-07-26 Hewlett-Packard Development Company, L.P. System and method for increasing projector amplitude resolution and correcting luminance non-uniformity

Also Published As

Publication number Publication date
CN101965551A (en) 2011-02-02
US20110012943A1 (en) 2011-01-20
CN101965551B (en) 2013-10-23
WO2009110896A1 (en) 2009-09-11
GB201015192D0 (en) 2010-10-27
TW200949820A (en) 2009-12-01
DE112008003758T5 (en) 2010-12-30
GB2470332B (en) 2012-06-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20200305